A power integrated module (PIM) and a motor control system are provided. The PIM is adapted to drive a motor. The PIM includes a first transformation circuit, a second transformation circuit, and a plurality of shunt units. The first transformation circuit includes a plurality of first half-bridge circuits, and a coupling relationship among the first half-bridge circuits is selected, so that the first transformation circuit is operated in a rectifier mode or an inverter mode. The second transformation circuit includes a plurality of second half-bridge circuits coupled to the motor. The shunt units are respectively coupled between the second half-bridge circuits and the motor and configured to sense a current between the second transformation circuit and the motor.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A power integrated module, adapted to drive at least one motor and comprising: a first transformation circuit, comprising at least three first half-bridge circuits, wherein a coupling relationship among the at least three first half-bridge circuits is selected, so that the first transformation circuit is operated in a voltage boosting and bucking mode, a rectifier mode, or an inverter mode; a second transformation circuit, comprising at least three second half-bridge circuits to form an inverter and coupled to a first motor; and at least three first shunt units, respectively coupled between the at least three second half-bridge circuits and the first motor and configured to sense a current between the second transformation circuit and the first motor.
2. The power integrated module according to claim 1, wherein the first half-bridge circuits and the second half-bridge circuits respectively comprise at least two switch devices connected in series, and the first half-bridge circuits and the second half-bridge circuits have a pair of first nodes located at two ends and a second node located between the at least two switch devices.
3. The power integrated module according to claim 2, wherein when each of the first half-bridge circuits in the first transformation circuit is nonconductive to each other, the first transformation circuit is operated in the voltage boosting and bucking mode, and the pair of first nodes of one of the first half-bridge circuits is coupled to an external power source, so as to perform a voltage boosting and bucking operation on a direct current voltage input by the external power source.
4. The power integrated module according to claim 3, wherein the second transformation circuit receives the direct current voltage where the voltage boosting and bucking operation is performed by the first transformation circuit and converts the direct current voltage into an alternating current voltage to drive the first motor.
5. The power integrated module according to claim 2, wherein when at least two groups of the first half-bridge circuits in the first transformation circuit are selected and coupled, and the pair of first nodes of each of the first half-bridge circuits is coupled to an external power source, the first transformation circuit is operated in the voltage boosting and bucking mode, so as to perform a voltage boosting and bucking operation on a direct current voltage provided by the external power source and provide the direct current voltage to the second transformation circuit.
6. The power integrated module according to claim 2, wherein when at least two groups of the first half-bridge circuits in the first transformation circuit are selected and coupled, and the second node of each of the first half-bridge circuits is coupled to an external power source, the first transformation circuit is operated in the rectifier mode, so as to convert an alternating current voltage input by the external power source into a direct current voltage and provide the direct current voltage to the second transformation circuit.
7. The power integrated module according to claim 6, wherein when the at least two groups of the first half-bridge circuits in the first transformation circuit are selected to enable the first transformation circuit to be operated in the rectifier mode, the non-selected first half-bridge circuits in the first transformation circuit are operated in the voltage boosting and bucking mode and configured to perform a voltage boosting and bucking operation on the direct current voltage and provide the direct current voltage to the second transformation circuit.
8. The power integrated module according to claim 2, wherein when at least two groups of the first half-bridge circuits in the first transformation circuit are selected and coupled, and the pair of first nodes of each of the first half-bridge circuits is coupled to an external power source, the first transformation circuit is operated in the inverter mode, so as to convert a direct current voltage input by the external power source into an alternating current voltage.
9. The power integrated module according to claim 8, wherein when three groups of the first half-bridge circuits in the first transformation circuit are selected and coupled to form a three-phase inverter, the first transformation circuit converts a direct current voltage output by an external power source into an alternating current voltage to drive a second motor.
10. The power integrated module according to claim 2, when at least two groups of the first half-bridge circuits in the first transformation circuit are selected and coupled and the second node of each of the first half-bridge circuits are connected to each other, the first transformation circuit is operated in the voltage boosting and bucking mode and configured to perform a voltage boosting and bucking operation on a direct current voltage provided by an external power source and provide the direct current voltage to the second transformation circuit.
11. The power integrated module according to claim 1, wherein each of the at least three first shunt units is a shunt resistor disposed inside the power integrated module.
12. The power integrated module according to claim 1, further comprising at least three second shunt units respectively coupled to the at least three first half-bridge circuits and configured to sense a current flowing through the first transformation circuit, wherein a quantity of the first shunt units is equal to a quantity of the second half-bridge circuits, and a quantity of the second shunt units is equal to a quantity of the first half-bridge circuits.
13. The power integrated module according to claim 1, further comprising a first brake arm and a second brake arm respectively connected in parallel to the first transformation circuit and the second transformation circuit.
14. The power integrated module according to claim 1, further comprising a first temperature sensing device and a second temperature sensing device respectively disposed adjacent to the first transformation circuit and the second transformation circuit and configured to respectively sense an operating ambient temperature of the first transformation circuit and the second transformation circuit.
15. A motor control system, comprising: a first motor; a second motor; and a power integrated module, comprising: a first transformation circuit, comprising at least three first half-bridge circuits, wherein a coupling relationship among the at least three first half-bridge circuits is selected, so that the first transformation circuit is operated in a voltage boosting and bucking mode, a rectifier mode, or an inverter mode and coupled to the first motor; a second transformation circuit, comprising at least three second half-bridge circuits which are coupled to the second motor, wherein the second transformation circuit is configured to drive the second motor; and at least three first shunt units, respectively coupled between the at least three second half-bridge circuits and the second motor and configured to sense a current between the second transformation circuit and the second motor.
16. The motor control system according to claim 15, wherein the first transformation circuit is operated in the inverter mode, the first transformation circuit drives the first motor by receiving a power from an external power source, the second transformation circuit drives the second motor by receiving the power from the external power source, the first transformation circuit and the first motor form a loop, and the loop is different from another loop formed by the second transformation circuit and the second motor.
17. The motor control system according to claim 15, wherein the second transformation circuit, the first motor, the second motor, and the first transformation circuit together form a loop.
18. The motor control system according to claim 17, further comprising a connection axle coupled between the first motor and the second motor.
19. The motor control system according to claim 18, wherein the second transformation circuit drives the second motor, and the first motor is driven by the connection axle to generate electrical energy and provide the electrical energy to the first transformation circuit.
20. The motor control system according to claim 19, wherein the first transformation circuit is operated in the rectifier mode to convert electrical energy of an alternating current provided by the first motor into a direct current and provide the direct current to the second transformation circuit.
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April 26, 2023
June 17, 2025
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